To make plural nouns not ending in s possessive, add an apostrophe + s.
What Is A Plural Possessive Noun. A noun is possessive when it shows ownership or possession of something. And that's how you form a plural possessive.
Singular or Plural Possessive Noun Sort by Rock Paper ... from ecdn.teacherspayteachers.com
A plural noun is a word for two or more people, places, or things. Normally these words would be a singular or plural noun, but in the possessive form they are used as adjectives to modify another a noun or pronoun. Most of the time, a plural noun will be formed by adding s to it.
The english possessive does not adapt well to noun phrases in general.